Origin of politically correct
Somewhat grimly, in the 1920s the Soviet Communist Party began using the concept of political correctness to enforce strict adherence to the party line in all aspects of life. It you were unfortunate enough to be deemed politically incorrect , you were likely to be exiled to a gulag, or worse.
Today the term politically correct (and its abbreviation PC ), more often than not, refers specifically to the language that surrounds controversial or hot-button issues. Liberals have used the negative construction not politically correct to draw attention to words, phrases, or statements that they felt were socially unacceptable or insensitive. The conservative response to this has been to question and generally reject the notion of political correctness , arguing that it too often entails “the policing of language.” As a result, critics of the term politically correct often use it to modify nouns such as “euphemism,” “nonsense,” “hogwash,” and “propaganda.”
first attested in prevailing current sense 1970; abbreviation P.C. is from 1986.
[T]here is no doubt that political correctness refers to the political movement and phenomenon, which began in the USA, with the aim to enforce a set of ideologies and views on gender, race and other minorities. Political correctness refers to language and ideas that may cause offence to some identity groups like women and aims at giving preferential treatment to members of those social groups in schools and universities. [Thuy Nguyen, "Political Correctness in the English Language,"2007]
Also, PC or p.c. Showing an effort to make broad social and political changes to redress injustices caused by prejudice. It often involves changing or avoiding language that might offend anyone, especially with respect to gender, race, or ethnic background. For example, Editors of major papers have sent out numerous directives concerning politically correct language. This expression was born in the late 1900s, and excesses in trying to conform to its philosophy gave rise to humorous parodies.